Littelfuse, Inc.
US ˙ NasdaqGS ˙ US5370081045

SecurityLFUS / Littelfuse, Inc.
InstitutionSignaturefd, Llc
Latest Disclosed Ownership1,571 shares
Latest Disclosed Value $ 533,191
Signaturefd, Llc reports 1.63% decrease in ownership of LFUS / Littelfuse, Inc.

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 1,571 shares of Littelfuse, Inc. (US:LFUS) valued at $533,119 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 1,597 shares of Littelfuse, Inc.. This represents a change in shares of -1.63% during the quarter. The current value of the position is $761,385 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-07 2026-03-31 13F LITTELFUSE COM 537008104 1,571 -26 -1.63 533 32.26 0.0082
2026-01-20 2025-12-31 13F LITTELFUSE COM 537008104 1,597 -9 -0.56 404 -2.89 0.0062
2025-10-21 2025-09-30 13F LITTELFUSE COM 537008104 1,606 8 0.50 416 14.64 0.0066
2025-07-16 2025-06-30 13F LITTELFUSE COM 537008104 1,598 1,140 248.91 362 302.22 0.0062
2025-05-02 2025-03-31 13F LITTELFUSE COM 537008104 458 14 3.15 90 -13.46 0.0017
2025-02-10 2024-12-31 13F LITTELFUSE COM 537008104 444 -107 -19.42 105 -28.77 0.0020
2024-10-21 2024-09-30 13F LITTELFUSE COM 537008104 551 82 17.48 146 22.69 0.0028
2024-07-29 2024-06-30 13F LITTELFUSE COM 537008104 469 59 14.39 120 20.20 0.0024
2024-05-03 2024-03-31 13F LITTELFUSE COM 537008104 410 18 4.59 99 -4.81 0.0021
2024-02-01 2023-12-31 13F LITTELFUSE COM 537008104 392 -109 -21.76 105 -15.45 0.0024
2023-11-03 2023-09-30 13F LITTELFUSE COM 537008104 501 25 5.25 124 -10.87 0.0032
2023-08-01 2023-06-30 13F LITTELFUSE COM 537008104 476 -3 -0.63 139 7.81 0.0035
2023-04-28 2023-03-31 13F LITTELFUSE COM 537008104 479 14 3.01 128 25.49 0.0035
2023-01-30 2022-12-31 13F LITTELFUSE COM 537008104 465 130 38.81 102 52.24 0.0030
2022-11-08 2022-09-30 13F LITTELFUSE COM 537008104 335 -401 -54.48 67 -64.17 0.0023
2022-08-10 2022-06-30 13F LITTELFUSE COM 537008104 736 266 56.60 187 59.83 0.0064
2022-05-02 2022-03-31 13F LITTELFUSE COM 537008104 470 -123 -20.74 117 -37.43 0.0035
2022-01-25 2021-12-31 13F LITTELFUSE COM 537008104 593 142 31.49 187 52.03 0.0057
2021-10-28 2021-09-30 13F LITTELFUSE COM 537008104 451 124 37.92 123 48.19 0.0042
2021-07-26 2021-06-30 13F LITTELFUSE COM 537008104 327 21 6.86 83 2.47 0.0033
2021-04-30 2021-03-31 13F LITTELFUSE COM 537008104 306 38 14.18 81 19.12 0.0036
2021-02-11 2020-12-31 13F LITTELFUSE COM 537008104 268 34 14.53 68 65.85 0.0032
2020-11-03 2020-09-30 13F LITTELFUSE COM 537008104 234 27 13.04 41 17.14 0.0022
2020-07-30 2020-06-30 13F LITTELFUSE COM 537008104 207 3 1.47 35 29.63 0.0021
2020-04-23 2020-03-31 13F LITTELFUSE COM 537008104 204 195 2,166.67 27 1,250.00 0.0023
2020-02-05 2019-12-31 13F LITTELFUSE COM 537008104 9 0 0.00 2 0.00 0.0001
2019-10-16 2019-09-30 13F LITTELFUSE COM 537008104 9 -21 -70.00 2 -60.00 0.0002
2019-07-31 2019-06-30 13F LITTELFUSE COM 537008104 30 -16 -34.78 5 -37.50 0.0004
2019-05-09 2019-03-31 13F LITTELFUSE COM 537008104 46 22 91.67 8 100.00 0.0007
2019-02-13 2018-12-31 13F LITTELFUSE COM 537008104 24 7 41.18 4 33.33 0.0004
2018-11-14 2018-09-30 13F LITTELFUSE COM 537008104 17 -30 -63.83 3 -72.73 0.0003
2018-08-14 2018-06-30 13F LITTELFUSE COM 537008104 47 10 27.03 11 37.50 0.0012
2018-05-08 2018-03-31 13F LITTELFUSE COM 537008104 37 37 8 0.0009
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.